Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
ASSETS
Cash and cash equivalents	$ 19,323	$ 61,135	$ 60,907
Accounts receivable, net	88,295	123,466	85,001
Accounts receivable from affiliates	3,137	57,421	36,351
Inventories, net	203,167	190,382	188,148
Deferred income taxes	19,705	18,566	12,740
Prepaid expenses and other	25,977	14,743	23,195
Total current assets	359,604	465,713	406,342
Property, plant and equipment, net	154,020	159,644	254,362
Goodwill	6,253	6,253	0
Other Intangibles, net	58,786	60,821	57,929
Deferred income taxes	11,775	15,806	1,324
Other non-current assets	60,961	62,283	68,836
Total assets	651,399	770,520	788,793
LIABILITIES AND EQUITY
Accounts payable	116,246	133,668	99,319
Revolving credit agreements of subsidiaries - not guaranteed by the parent company	11,340	55,000	74,524
Current maturities of long-term debt of subsidiaries - not guaranteed by the parent company	1,485	1,467	7,877
Accrued payroll	29,484	23,567	14,837
Other current liabilities	34,248	40,979	37,868
Total current liabilities	192,803	254,681	234,425
Long-term debt of subsidiaries - not guaranteed by the parent company	166,239	191,431	147,257
Mine closing reserves	38,320	37,399	35,930
Pension and other postretirement obligations	9,831	10,616	7,355
Deferred income taxes	0	0	23,026
Other long-term liabilities	52,112	64,919	66,013
Total liabilities	459,305	559,046	514,006
Common stock:
Retained earnings	206,400	224,428	279,922
Accumulated other comprehensive loss	(21,286)	(20,189)	(12,762)
Total stockholders' equity	192,094	211,474	274,787
Total liabilities and equity	651,399	770,520	788,793
Shares Outstanding Class A
Common stock:
Common stock	5,407	5,662	6,046
Shares Outstanding Class B
Common stock:
Common stock	$ 1,573	$ 1,573	$ 1,581